Each of the control levels is associated with different activities and time frames as illustrated in the following diagram:
Activities on different S95 enterprise control levels
Software systems used at each of the levels will vary, too. For instance, Level 4 can also include an ERP (enterprise resource management) system, as well as apps for supply chain management or customer relationship management. In addition to a manufacturing execution system (MES), Level 3 can comprise a laboratory information management system. Level 1 and Level 2 embrace commonly used control systems, while Level 0 corresponds to physical assets. ...
